Concrete-block machine



Nov. 9 1926.

E. A. 'LONG CONCRETE BLOCK MACHINE Filed March 13. '192e 4 sheets-snaai 1 52 53ml l n j l l l L 57' Y :I Y 76 i 35 a9v r 44 j 49 49 I v l Q 5D 50 Q 81 41 sa, l v o 46 g5 56 x Nov. 9 1926. 1,606,585

E. A. LONG CONCRETE BLOCK MACHINE Filed March 13, 1926 4 Sheets- Sheet 2 Gnome.

Nov. 9 1926.

E. A. LONG CONCRETE BLOCK MACHNE Y Filed March 13, 1926 4 Sheets-Sheet 3 E.`A. LONG CONCRETE BLOCK MACHINE Nov. 9', 1926. 1,606,585

Filed March 1:5, 1926 4 vSmets-sheet 4 5a 54 6 '4 Y a 73 e 8 o 61 50 83 59 q. o Q U *s y 9 '35 n 65 44 31 .3f-In'. .f .l I 3l l 31].

19 -A o o O O 8 ff *77.

/ a L s G Patented Nov. 9, 19263.

EDWARD A. LONG, F NEW CASTLE, PEFINSYLVANA.

CGNCRElE-IBLOCH MACHINE.

Application filed March 13, 1926. Serial No. 94,572.

The object ot' my present invention, broad-- ly speaking, is to provide a copcrete-block forming machine, that is to say, a machine for forming the body portions ot blocks made of concrete, or the like, the blocks so formed being' what is designated as brick art blocks; said machine being comparatively simple in character, strong and durable in construction, positive in action; adaptl0 ed to release Vand move the blocks formed thereby on straight lines, that is directly downward and outward; said machine being easily operated and controlled by hand, and designed to aidoid a maximum ot efciency with a minimum of time and expense devoted thereto.

More specifically stated, my object is to provide a machine adapted to receive the face portion of a concrete block previously 20' formed inthe manner set torth in Letters Patent No. 1,571,849, which was issued to me on February 2, 1926, and to apply thereto the body portion ot' the block being constructed.

Other objects and particular advantages of my invention will be suggested in the course of the following description, and that which is new and useful will be correlated in the appended claims. i

The preferred manner of carrying out the principles of my invention in a practical and eiicient way is shown in the accompanying four sheets of drawings, in-which-Figure 1 is a front elevation of my machine. Figure 2 is a rear elevation ot the same. Figure 3 is a lett-hand side elevation ot the same. Figure Llis right-hand elevation oi the same. Figure 5 is a detail view ot the draw-table, and its operating mechanism. Figure 6 is a plan view oi the carrier member ot the drawtable tor the table operating mechanism. Figure 7 is a perspective View of the sliding member of the draw table operating mechanism. Figure 8 is a plan view ol' the handle and shifting means lor the draw table operating mechanism. Figure 9 is a iront elevation of the mechanism shown in Fig. 8, showing its connection with the draw table. Figure 10 is a plan view ot the turn-over table. Figure 11 is a cross section otthe turn over table. Figure 12 is a top plan view of the draw table mechanism. Figure 13 is a cross section of the draw table mechanism. Figure 111 is a plan view of the core holder. Figure 15 is a plan view ot the hinged side of the mold bei:E Figure 15 is an end eleva-f tion oil' the hinged side of the mold box. Figure 17 is a perspective view ot the complete machine, showing the mold box as turned over, and showing a iinished concrete block on `the draw table after the block has been released from the mold box, and showing the draw table `as moved outward with the released concrete block thereon. Figure 18 is a perspective view of the tace plate `for forming the tace oi the block proper and prior to its insertion into the machine. Figure 19 is an end elevation of tace plate and the tace portion ot a block formed thereon. Figure 20 is a cross section of a completed block. Figure'21 is an inside tace view of the upper portion ot the right-hand member ot the vmain frame. Figure 22 is an edge view of one of the end-gate holders. Figure 23 is a tace view ot the same parts shown in Fig. 22, taken at right-angles thereto. Figure 211 is a side elevation ot one of the end gates alone. And Figure 25 is a top plan view ot one. of the end gates alone. Similar indices denote like parts throughout the several views. In order that the construction, the operation, and the several advantages ot my invention may be more fully understood and appreciated, I will now take up a ydetailed description thereof, in which l will set forth the same as fully and as clearly as l may.

Referring now to the drawings in detail: Numeral 1 denotes the left and numeral 2 the right-hand main members ot the trame or" my machine, which members are substantially identical with eac-h other, and they stand in vertical position parallel with each other.

Intermediate their centers and lower portions the same members 1 and 2 are rigidly connected by cross-bars 5 and 6, the former being in the front and the latter in the rear, as shown in Figs. 1 and 2, respectively. Said cross bars are secured to the end members at each end in any well known manner, as by means ot bolts.

Secured horizontally to the inner face ot the member 1 is a channel member or track 7; and a like track member S is secured to the inner tace of the member 2. The members 7 and 8 are located directly opposite to each other, and on the same level, and they are adjustable with relation to the end members 1 ,andy 2. Said members 7 and 8 have channels facing eac-h other, and formed through the central portions ot the base of each. and extending' longitudinally thereof;

are slots, which slots register with the re spective slots 9 and 10 which are termed through the respective members 1 and 2.

Cogged racks 11 and 12 are secured on the upper faces ot the lower flanges ot the respective members 7 and 8. And located inside the channels et the members 7 and 3 are the respective cog-wheels 13 and 111, which mesh in the respective racks 11 and 12, with one side of said wheels contacting with the base ot their respective members 2" and 8. A shatt 15 extends through the slots 9 and 10, and on which the wheels 13 and 111 are mounted. Said shaft is prevented from endwise movements by collars, as the collar 16 shown in Fig. 3, which collars contact with the outer faces ot the respective members 1 and 2. Secured on the projecting right-hand end of the shaft 15 is a hand-wheel 13, by which the shaft 15 and the wheels 13 and 14 may be rotated by turning said wheel 18.

Numeral 19 denotes the draw-table, which has tlanges 19a and 19b extending out from the ends thereof, which flanges are slidably mounted in the channels of the members 7 and 8, and inward from said racks. Said shaft 15 is revolvably mounted in a bearing 15 which is integral with the rear side otl the table 19, whereby the table 19 will be carried forward and bacln. ard with the shalt 15 as said shaft is revolved. rllhe torward and backward movements ot the shaft 15 being` caused by the wheels 13 and 1l operating in their raclrs 11 and 12, as the wheel 18 is turned by hand.

Fi'irmed integral with the under side ol the table 19, and at each corner thereof, are the bases through each el: which is 'formed an aperture 91, shown in Fig. 12, which apertures continue up through the top ot the table 19 and in which are slidably mounted the pins 20, with their heads adapted to rest on the top ot the table when they are down to their limits ot movement. Fitting insiue ot the table 19 is an Lshaped member 2 (Fig. G) with its tourextremities reaching; underneath the tour apertures 91 in which he pins 2O operate, whereby the lower ends of said pins 2O rest on the said corners of the member 21, to which they are secured, whereby the raising or lowering of the member 21 will lower or raise all oll the pins 2() together, that is at one time.

Secured on. the underside and in the center ot the member 21 is the smaller triangular block and in sliding contact therewith the er sliding triangular block the diagonal 1faces ot the blocks 22 and 23 are in contact with each other, and they operate at right-angles to the length ot the member 21.` that is to saw-the block 23 is adapted to move forward and. backward in Contact with the block 22. T he block 23 is mounted on the bei' 24, whose ends are slidably mounted in apertures formed through the reoaees 'iront and the rear sides ot the draw table The lor- Yard end ot the bar 24 is pivoted to the small shalt 25, as at A in Fig. 3. ,ilhe other end ot the she-ift 25 is pivoted at ld to the block 26, the latter being pivoted at C to a projection from the `trent ol the. ll'iwer portion ot the table 19. The handle is secured to the blocl: 26 whereby said blocl: may be turned laterally as desired.

1t will new be seen that it the handle 2T be turned to the right and tl e lett that it will cause the member 21 to be raised and lowered, thereby raising and lowering the pins 20. ln practice if the handle 27 be turned to the le ift the pins 2O will be lowered, and. it turned to the right the pins will be raised. Also it should be noticed that by reason olf' the construction shown that the pins 2O will he lockedV in either their raised or lowered position, 'tor the reason that the block 26, and the connections therewith, acts as an eccentric.

Extending back from the members 1 and 2 ere the respective extensions V23 and 29, i ch have horizontal upper edges, as

saown.

vExtending between the members 28 and is the core operator shalt 30, on which is mounted the core operators 31, hereinafter reilerred to in this description.

Extending rearward and upward nfrom the rear corners or the e3; ensioni 23 and 29 are the respective arms 32 and which carry the core shaft support 3&1.

Secured on the projecting lett-hand end el the sha'lt 3l) is the operating lever 35, by which said sha'tt may be rotated.

lluinerals 3G and 37 denote braclrets which are a. justably secured on the upper edges oit the respective extensions 23 and 2f), by the respective pairs ci" bolts 33 and 39. rlhe upper portions ot the brackets, 36 and 3T, are connected by the core holder 40.

Numeral l1 denotes the turn-over table, which is revo if'ably connected to the end menihei's 1 and 2 by trunnions lf2 and 43, which are mounted in bearings carried by said members 1 and 2, as the bearing 44, .f-hown in and i tudinally through the table Ll1 is a shalt 15, the same beingroncentric with and extends throne-:h said trunnions. On the projecting lett-l ind end oi the Shaft tais secured the hand-wheel 46, by which said shalt maybe rotated. inside the table 4:1 the shaft zl5 is threaded, one-hall2 et the threads being right-hand and the other haltv lett hand, as in Fig. 1G, 'tor the purpose hereinafter ein pl a ined.

lbf-:tending up i the surface of the table l1, ana s idaho thereon, the two enl ,frate members, if? and. 43, which the ends of the mold-bor` which is located .n the table 4.1. Secured c i ,ner face ot each ot the end gate members 45,' and liv messes 48, is an end mold 95 and 96 respectively, which :terms the indentations in the ends ot' the block l). Said end gate. members, 47 and are detachably secured in upright position each by an end gate holder or standard, and 71 respectiv'el 7, the lower positions of which are adapted to move in the. channel Y, Fig. 11, which is located longitudinally in the center ot the table 41, with their lowerend portions threaded en the shalt 45, one being operative on the r dit and the other on the lett-hand threads or he shaft 45. Secured on the outer faces ot the end gates 47 and 48 are the respective U-shaped catches. 88 on the right and 84.0n the lettgate, through which the upper portions ot the respective members 70 and71 pass. There being hook-springs 85 and 86 carried by the members 70 and 71, r pectiifely, which engage the respective members 83 and S4 to hold the end gates 47 and 4S in operati VYe position. When desired it evident that by simply pressing inward on theupper ends ot the springs 85 and Se the niembers 47 and 4S may be easily and quickly released and litted upward and removed.

i'lilhen the members 47 and 4S are in opeI-'ative position, it is apparent that when the wheel 46 is rotated that they will move toward and from each other, depending,` on which way the wheel is rotated, for the reason that they will be carried by the end holders 70 and 71 which in turn are connected with the shaft 45.

Numeral 49 denotes the fixed side ol' the mold hoi-f. which is secured to the top of the table 41 by a plurality ot brackets 50, and it normally remains in this lined position, except that it can be adjusted for various sizes et' work. The other side. 51 ot the mold bor; is similar to the side 49,l but it is hinged to the table 41, bv hinges 3 and 4, whereby it can be turned up parallel with the side 49 to complete the sides and ends or the .nold box, or it can be turned at right angles, loopen the mold box as in Fig. 17.

Formed through the men'iher 51 are the three large core apertures,D, E and F, Fig. l5, and the two small core apertures Gr and H.

Secured to the inner face oit the member l Vare the two moldingr blocks 17, shown in llas. 15 and 17, and their locations are .d in dotted lines in 15. Said 17 e1-:tend from the apertures G and top edge et the member 5l, that is to the upper line shown in Fig. 15, for the purpose hereinafter stated.

`1";innerals 5 and t3 denote stop brackets which are adapted to support the hinged side 51 ofthe mold box in operative position while the mold is being' lilled. Said brackets extend torward from the core holder 40 to which they `are secured.

' Formed through the core holder 40 are three core apertures l, T and K, which correspond in size and register with the apertures l), E and F and the apertures L ,and lvl Correspond in size and register with the apertures G and H.

The large cores 60, 61 and 62 are supported by and slide in the respective apertures l, J and K, and through the apertures l), lil and F, with their forward ends adapted to extend entirely across the interior oli` the mold box, to the forward side 49 thereof.

Said. cores 60, 61 and 62 are retained in proper spaced relation to each other by the core support 40, which in turn is held by the shaft end support or holder 7 9, and extending rearward from the latter are the core .shafts or guides 63, 64 and 65.

Numerals 73 and 74 denote the small cores, which have the; rear ends connected with the holders 7 0 and 71, and they operate simultaneously with the` cores 60, 61 and 62, and they slide through their respective apertures L M and G-H, but they extend only about halt-way through. the mold box.

Numeral G9 denotes a lug carrie-d by` the mold loonr which when the mold bof; is turned i'rom its inverted position shown in F 17, to upright position as in Fig. 1, that it can only go to a point suliicientte bring',- the talele 4.1 to exact upright or horizont-,al position as in F ig. 4, at which latter position the lug 69 will engage with a projecting portion ot themember 2 of the main frame. f

Secured to the right-hand end olithe turnover table 4l is the handle 59, by which said table may be turned 180, turning` on .the trunnions 4.9 and 48. By means ot the small plunger 75, shown in Fig.` 10, whieh is operated by the auxiliary, spring' actuated., lever 76, the turn over table may be locked. and unlocked in either upright, or hall turned over position, or at an angle, as the plunger 75 may he entered in either ot the sockets hereinafter described. y

ln Fig. 21 is shown three lugs, 92, 93 and 94, which extend .inward from the inner face of the. upper portion ot the member 2, and in each oit said lugs a socket is formed, as the respective sockets 87, 88 and 89, which are adapted to receive the free end ot' the plunger 75. When the plunger 7 5 is in socket. 87 the turn over table will he in inverted position, as in Fig. 17 while it it be in the socket 89 the table will be. in upright position, as in Figs. 1, 3 and 4; and when the plunger is in socket 88 the said table will be held at an angle, which is the position required to insert the facing pla-te 79, carrying` the face. portion of a` new block. Formed through the top or" the table 41 are teur apertures 77, which are adapted to receive the respective tour beveled llugs 78 Awhich are formed integral with the. underside ot the-facing plate 79, where they are adapted to be rigidly secured by clamps or 'other means as desired.

The tace N ot the block to be formed by this machine is indicated in Fig. 19, and the hacking therefor is indicated by letter The said parts, N and O, having previously been made on the plate 79, as settorth in .said Patent No. 1,571,849. The body of the concrete block to be made by the machine now being described is indicated by the letter P, as shown in Fig. 20.

Numeral 52 denotes the pallet board or top ot the mold box, and it is adapted to rest on the edges ot the sides and the ends thereot whereby it may be secured by the clamps 53 and 54 which lit over the ends ot the member 52, as shown in Figs. 3 and 4. Said clamps are adapted to be tightened Ior loosened by eccentrics which are operable by the levers 55 and 56 in front, or by the levers 57 and 58 is the rear, the operation ot either set of levers accomplishing the same results.

Secured to the shalt 30 are the core operating arms 31, the upper ends ot which are slidably connected with the rear end ot the holders 7 O and 71. The core operating arms 31 are operable by the 4operation ot the lever 35, through the operation ot the shaft 30,v whereby the cores 60 61, 62, 7 3 and 74 may be driven forward and backward in direct horizontal lines, all operating synchronously. When the concrete bloclrl is completed, as shown in Fig. 17, the aperturesA Q, R and S will have been formed therethrough by the cores 60, 61 and 62, respectively. The cavities T and U having at the same time been Jformed by the cores 73 and 74; and the notches V and JV are formed by the blocks 17 and at the same time the impressions in the ends of the block will formed by the molds 95 and 96. When opened out, as in Fig. 17, the side 51 may be retained in open position by means of the latch 80, as shown in Fig. 17.

The eccentrics 55 and 56 are adapted to be adjusted laterally in their slots 81 and 82, whereby the end gate members ot the mold boi; can be located to torni various lengths ot blocks l?, and also to tree the block when it is ready to be removed.

Operation.v

The tace et a concrete block to be formed by this machine is first prepared on a facing plate 79, as set forth in Patent No. 1,571,849. Said plate containing the `tace portion N and its backing O is then placed on the table 41, with the lugs 7 8 fitting in the openings 77 ot the table 41, w iere they are securely clamped, this being done while the table is turned at an angle as stated.

The above will bring one edge ot the plate 79 against the side 49.

The end gates 47 and 48 are then brought incassa toward each other by turning the wheel 46 i until the end gates are the proper distance apart to rorm the block ot the desired length, that is until the end gates are brought into contact with the ends ot the plate 79.

The hinged side 51 of the bold box is then turned on its hinges, 3 and 4, bringing it to vertical position, that is parallel with the tired side ot the core box. The lever is then turned forward, turning the shaft 30, and causing the core operating arms 31 to 'torce the core members 60, 61, 62, 73 and 74 through the apertures D, lll, F, G and H in the side 51, and extending them into the moldbox, the first three eX- tending entirely across the mold bor. and the two latter only about halt-way across the interior ot' the mold box.

rlie mold box may now be filled with concrete mixture, lilling around the cores and various other parts inside the mold box, and i-tending it up even with the top ot the mold bonv and tainping it down compactly, atter which the pallet board, forming the lid, is placed in position thereon, as in Fig. 1. The clamps 53 and 54 are then turned inward over the ends ot the pallet 52, and the eccentrics 55, 56, 57 and 58 are then turned by means ont' their respective handles whereby the clamps will rigidly secure the pallet 52 in position.

The nent operation is to turn the lever rearward, which will draw the cores 60, 61, 62, 73 and 74 from the interior of the mold box, thereby leaving their impressions in the body l). l then grasp the handle 59, at the saine time grasping the lever 76, and withdrawing the plunger 75 from its socket, then by pressing forward on the lever 59 the entire mold box, and the other parts attached thereto, including the concrete block in process ot construction, may be given a halt turn which will bring the parts to inverted position.

New by turning the wheel 18 it is evident that the draw table 19 may be brought directly under the pallet 52, which has now become the bottoni. 1 then turn the handle 27 to the right, it having previously been to the lett, which will torce the pins 2O upward into Contact with the pallet 52, which will support the hloclr when it is released. l. then release the clamps 53 and 54 and swing them outward and apart to where they are shown in Fig. 17, which will release t-he pallet 52 and allow it, together with the bloclr being formed, all to be supported by the pins 20. l then release the side 51, turning it on its hinges and 4, and swing it to the position in which it is shown where it may be secured by the latch 80. I Y next revolve the wheel 46 to withdraw the end gates 47 and 48 from the block, moving them in a straight line and in directions opposite to each other. rlfhe block will. now be iso freed from the mold box, except its contact with the vertical face of the `fixed side 419. Therefore 1 next slo-wly turn the-handle 27 to the left, which will lowerl the pins 20, whereby the pallet 52 will be lowered, also the concrete block carried by the pallet, moving the same downward in a straight `line until the block is entirely free and ready to be moved forward or outward. I then turn the wheel 18 whereby the drawtable 19, which now carries the new block, will be carried forward from under the mold box, and bringing it to such position that the pallet 52 may` be manually lifted, with the finished block thereon, and carried away and stacked for the proper time for curing the block and for drying.` i

It should be noticed that the openings V and TV, in the block, will have been formed by Athe mold blocks 17, which are secured to the inner face of the side 51 of the mold box, and then when said side is turned outward, as shown in F ig. 17, the said blocks 17 will be withdrawn, thereby leaving their impressions V and lV in the completed concrete block.

After the .concrete block has been completed, removed from the machine, and disposed of, then the handle 59 may be grasped and the mold box be turned back to about 30 position, after which the draw table may be moved back to position under the mold boi; by turning the wheel 18, after which the operations above set forth may be repeated as before stated. First removing the facing plate used in the block just completed, and a new facing plate 79 containing the face portion for a new block is inserted in the machine as previously set forth.

The impressions V and lV formed by the blocks 17, and the cavities T and U, formed by the cores 73 and 711s, may be filled each with a wooden bloclt, to providing nailingl means if desired. The same being set forth in my pending` application for patent, Ser. No. 27,295, filed May 1, 1925.

I desire that it be understood that various changes may be made in the several details herein set forth without departing from the spirit of the invention and withoutsacrificing any of the advantages thereof which are new and useful and which involve invention.

Having now fully shown and described my invention, and the best means for its construction and operation to me lmown at this time, what 1 claim, and desire to secure by Letters Patent of the United States, is-

1. A concrete block forming machine comprising a main frame composed of spacec` end members, a turn-over mold box rotatably mounted between the end members and comprising a table, a fixed side secured on the table, a second side hinged to the table and adapted to extend parallel with the lixed side or to be turned outward therefrom on hinges, end members adapted to connect the ends of the two sides, meansfor moving the end members synchronously ltoward ,and from each other, a lpallet forming a cover for the mold box and adapted to rest on the sides and the ends, clamps for holding` the pallet in said position, and means for turning the mold box upside down, all substantially as set forth.

2. A concrete block forming machine comprising a main frame composed of spaced end members, a block forming enclosure including a table with its top forming the bottom of the enclosure, a lined side extending` up from the table, a hinged side connected with the table, ends slidable on the table ,toward and from each other, a cover 4to rest on the upper edges of the sides and the ends, clamps for holding the cover in place, trim nions extending from the ends of thek table and mounted in bearings carried by the end members, cores adapted to .slide horizontally through apertures therefor in the hinged side, means for moving said cores inward and outward, and means for turningl said enclosure upside down on said trunnions.

3. A concrete block forming` machine comprising` a frame comprising two end members spaced apart and rigidly connected together, a block forming enclosure including i a table, a fixed side extending up from the table, a hinged side connected with the table, endmenibers slidably mounted on the table, a top for the enclosure, means for securing the top in closed position, trunnions projecting from the ends of the table and supported by bearings carried by the end inembers of the frame, a plurality of cores mounted to slide into the mold box through apertures formed through the hinged side, a lever for projecting said cores into the core box and for withdrawing them therefrom, means for turning said enclosure upside down, and a draw table located underneath the enclosure when the enclosure is upside down, means carried by the draw table for receiving the top of the enclosure and lowering it together with a completed concrete block thereon, and means for carrying the draw table horizontally from underneath the enclosure.

4L. A concrete block forming machine comprising the main end members of the frame, a mold-box table, trunnions formed at the ends of the table and adaptedto operate in bearings carried by the main frame, a shaft extending through the members of the main frame and through the table and through said trunnions, a fixed side carried by the said table, a hinged side carrie-d by the said table, two end gate members carried by the table and adapted to be moved toward and 'from each other by the rotation of said shaft, a cover adapte-d to rest on the upper edges of said sides and ends, means for clamping the cover in place, cores adapt-ed to move horizontally through apertures in said hinged side and projecting into the space between said sides and ends, means for operating said cores horizontally, and means for giving said table a halttiirn after a concrete block has been formed in the enclosure formed by said sides and ends and after the cores have been withdrawn therefrom.

5. A concrete block forming machine comprising a main frame, a mold box table, t-runnions permitting said table to be revolved in the frame, means tor locking the table in upright or inverted position, a mold box enclosure mounted on said table and comprising a iixed side', a hinged side, end members, and a top; cores adapted to be driven horizontally into the mold box through apertures in the hinged side, said cores comprising a plurality or major cores and a plurality of minor cores, means carried by the inner face of the hinged side for molding spaces in the block to be formed in the mol-d box, which notches will connect with and be. at right-angles to the spaces formed by the minor cores, means for securing a matrix plate on said table and inside the mold box which matrix has the tace portion of a concrete block carried thereon, the interior of the mold box to be filled with concrete compost with said top resting on the compost in the mold box, means for withdrawing all of the cores simultaneously Jfrom the mold box, means for giving the table and the mold box and the. bloclr formed in the mold box a halt turn, and means for lowering the completed block in a straight line and then carrying it out from underneath the mold box.

6. A concrete block vforming machine comprising a main frame composed ot end members spaced apart, a turn-over mold box rotatably mounted between the end members and comprising a table, a fixed side for the table, a hinged side for the table, end gates coacting with said sides and adapted to be moved toward and from each other, a pallet forming a cover for said mol-d box, trunnions by which said table is rotatably mounted, cores adapted to be projected into the mold box and removed therefrom, means for turning the mold box after al block has been formed therein and whereby said pallet becomes the bottom of the mold box, a draw table adapted to receive the pallet with the block thereon and lower them in a vertical line, and means for causing the draw table to move outward in a horizontal lin-e to free the block from the machine.

7. A mold lfor forming concrete blocks, said mold comprising a turn-over table., a side extending up from one edge of said table and rigidly secured thereto, a second side member hinged to the other edge of said table, end gate members adapted to move toward and from each other and adapted to connect said sides, means for moving ,said end gate member in opposite direction at the same time, a pallet completing the enclosure of the mold, a plurality of cores adapted to project into the interior ot the mold to remain therein during the tine the block is being formed in the mold, means for removing said cores after the block has been formed in the mold, means for giving the mold a half turn-over with the block therein, means for releasing the block from the mold, a draw table adapted to receive the block 'from the mold and by which the block may be lowered directly downward and then moved directly outward.

EDWARD A. LONG. 

